Most of transcription factors recognize specific DNA sequences through small, discrete domains. In some cases, these domains can be interchanged between proteins showing that they are independently folded units. Mutational ...

Motility is an essential property of all animal germ cells. Gametogenesis can be divided into three main phases with respect to germ cell motility. Primordial germ cells migrate into the gonadal rudiments. A long captive ...

The pathophysiology of non-ACTH-dependent adrenal nodular hyperplasia and tumors resulting in Cushing's syndrome is still largely unknown. Previous in vitro studies have demonstrated the presence of ectopic (mostly ...

Genes coding for the major histocompatibility complex (MHC) class I and class II molecules belong to relatively large multigene families. Most of these genes have been involved in immunological phenomena such as graft ...

The number of nephrons at birth is normally quite fixed in any species. Severe renal hypoplasia is readily detected because of functional insufficiency, but moderate inborn nephron deficits may exist, yeat remain undetected. ...